"What's important to me is having my nutrition qualification, because it's very easy to bandy about the idea of healthy eating and I would find it very difficult to take advice from somebody who's not qualified in the area," she said.

Rosanna Davison and Rozanna Purcell

"Once you study it, you realise what's healthy and what's not."

"So there's nobody else out there that has my qualification and also has a world title in the beauty area, and can combine them both.

While she is known for her healthy vegan lifestyle and strict exercise regime, Rosanna admits that she does indulge in a takeaway - albeit a healthy one - every once in a while.

Promoting the takeaway service justeat.ie, she said: "The great thing about justeat.ie is that a lot of the takeaways are healthy - you can get vegan- friendly, paleo-friendly, dairy-free, and sugar-‑free takeaways now," she said.

Rosanna and her husband Wes Quirke have been married since last May and are looking forward to spending February 14 as husband and wife for the first time.

"This is our first Valentine's Day married, but it's our ninth in total," Rosanna said.